Heat sink for a luminaire



FIG. 1 is a perspective view of an embodiment of the invention;

FIG. 2 is a side elevation view of the embodiment of FIG. 1, the heat sink being symmetric about a center axis;

FIG. 3 is a bottom plan view of the embodiment of FIG. 1; and,

FIG. 4 is a top plan view of the embodiment of FIG. 1.

The phantom lines shown in FIG. 1-FIG. 4 are environmental and not part of the claimed design.

References to “side”, “top”, and “bottom” in the figure descriptions are not meant to require certain in-use orientation, a heat sink according to the claimed design may be used in any orientation. 

We claim, the ornamental design for a heat sink for a luminaire, as shown and described. 